A NOVEL-APPROACH TO THE DESIGN OF UNKNOWN INPUT OBSERVERS

A novel state estimator design scheme for linear dynamical systems driven by partially unknown inputs is presented. It is assumed that there is absolutely no information available about the unknown inputs, and thus unlike a number of past studies, no a priori assumption is made about the nature of these inputs. A simple yet elegant approach for designing a reduced-order unknown input observer (UIO), with pole-placement capability is proposed.